| Rank | Welsh as First Ancestry Population Percentage ▼ | School District / Population |
| 1. | 3.9% | Ipswich School District 22-6 / 2,265 |
| 2. | 2.3% | Lead-Deadwood School District 40-1 / 7,071 |
| 3. | 2.0% | Spearfish School District 40-2 / 14,780 |
| 4. | 1.9% | Gayville-Volin School District 63-1 / 1,164 |
| 5. | 1.9% | Chester School District 39-1 / 1,590 |
| 6. | 1.7% | Hurley School District 60-2 / 800 |
| 7. | 1.7% | Stanley County School District 57-1 / 2,896 |
| 8. | 1.6% | Bridgewater School District 43-6 / 961 |
| 9. | 1.5% | Howard School District 48-3 / 2,350 |
| 10. | 1.5% | Edgemont School District 23-1 / 1,182 |
| 11. | 1.4% | Custer School District 16-1 / 7,774 |
| 11. | 1.4% | Jones County School District 37-3 / 1,064 |
| 13. | 1.3% | Platte-Geddes School District 11-5 / 3,029 |
| 14. | 1.3% | Canistota School District 43-1 / 1,045 |
| 15. | 1.3% | Huron School District 02-2 / 14,661 |
| 16. | 1.3% | Wolsey-Wessington School District 02-6 / 1,225 |
| 17. | 1.2% | Dakota Valley School District 61-8 / 5,854 |
| 18. | 1.1% | Deuel School District 19-4 / 3,139 |
| 19. | 1.1% | Haakon School District 27-1 / 1,632 |
| 20. | 1.1% | Armour School District 21-1 / 1,002 |
| 20. | 1.1% | Faulkton School District 24-4 / 2,178 |
| 22. | 1.0% | Groton Area School District 06-6 / 3,876 |
| 23. | 1.0% | Kadoka School District 35-2 / 3,257 |
| 24. | 1.0% | Elk Mountain School District 16-2 / 356 |
| 25. | 1.0% | Britton-Hecla School District 45-4 / 3,142 |
| 26. | 0.9% | Arlington School District 38-1 / 1,851 |
| 27. | 0.9% | Langford School District 45-2 / 1,325 |
| 28. | 0.8% | South Central School District 26-5 / 899 |
| 28. | 0.8% | Brandon Valley School District 49-2 / 15,229 |
| 30. | 0.8% | Marion School District 60-3 / 1,455 |
| 30. | 0.8% | Greater Hoyt School District 61-4 / 261 |
| 32. | 0.8% | Canton School District 41-1 / 5,377 |
| 32. | 0.8% | Doland School District 56-2 / 909 |
| 34. | 0.8% | Chamberlain School District 07-1 / 6,192 |
| 34. | 0.8% | Clark School District 12-2 / 2,706 |
| 36. | 0.7% | Rapid City School District 51-4 / 88,085 |
| 37. | 0.7% | De Smet School District 38-2 / 1,730 |
| 37. | 0.7% | Meade School District 46-1 / 18,163 |
| 39. | 0.7% | Hill City School District 51-2 / 2,630 |
| 40. | 0.7% | Flandreau School District 50-3 / 3,568 |
| 40. | 0.7% | Frederick Area School District 06-2 / 958 |
| 42. | 0.7% | Vermillion School District 13-1 / 12,172 |
| 43. | 0.6% | Wessington Springs School District 36-2 / 1,851 |
| 43. | 0.6% | Iroquois School District 02-3 / 1,162 |
| 45. | 0.6% | Aberdeen School District 06-1 / 30,413 |
| 46. | 0.6% | Hanson School District 30-1 / 1,733 |
| 47. | 0.6% | Northwestern Area School District 56-7 / 1,855 |
| 48. | 0.6% | Miller Area School District 29-4 / 2,958 |
| 49. | 0.6% | Sioux Valley School District 05-5 / 3,183 |
| 50. | 0.6% | Roslyn School District 18-2 / 748 |
| 51. | 0.5% | Elk Point-Jefferson School District 61-7 / 3,886 |
| 51. | 0.5% | Brookings School District 05-1 / 25,169 |
| 53. | 0.5% | Douglas School District 51-1 / 11,883 |
| 54. | 0.5% | Faith School District 46-2 / 689 |
| 55. | 0.5% | Centerville School District 60-1 / 1,716 |
| 55. | 0.5% | Mobridge-Pollock School District 62-6 / 4,046 |
| 57. | 0.5% | Mitchell School District 17-2 / 18,036 |
| 58. | 0.5% | Harrisburg School District 41-2 / 14,083 |
| 58. | 0.5% | Yankton School District 63-3 / 19,611 |
| 60. | 0.4% | Bison School District 52-1 / 970 |
| 60. | 0.4% | Lyman School District 42-1 / 3,056 |
| 62. | 0.4% | Wilmot School District 54-7 / 1,951 |
| 63. | 0.4% | Sioux Falls School District 49-5 / 140,350 |
| 63. | 0.4% | Madison Central School District 39-2 / 8,557 |
| 63. | 0.4% | Leola School District 44-2 / 1,062 |
| 66. | 0.4% | Lennox School District 41-4 / 5,734 |
| 67. | 0.4% | Pierre School District 32-2 / 15,635 |
| 68. | 0.4% | Redfield School District 56-4 / 3,664 |
| 68. | 0.4% | Watertown School District 14-4 / 24,445 |
| 70. | 0.3% | Willow Lake School District 12-3 / 958 |
| 71. | 0.3% | West Central School District 49-7 / 6,109 |
| 71. | 0.3% | Woonsocket School District 55-4 / 1,366 |
| 73. | 0.3% | Gregory School District 26-4 / 2,123 |
| 73. | 0.3% | Wall School District 51-5 / 1,788 |
| 75. | 0.3% | Sanborn Central School District 55-5 / 1,185 |
| 76. | 0.3% | Plankinton School District 01-1 / 1,276 |
| 76. | 0.3% | Oelrichs School District 23-3 / 466 |
| 78. | 0.3% | Kimball School District 07-2 / 1,251 |
| 79. | 0.2% | Tea Area School District 41-5 / 4,985 |
| 79. | 0.2% | McCook Central School District 43-7 / 2,279 |
| 79. | 0.2% | Tripp-Delmont School District 33-5 / 1,801 |
| 79. | 0.2% | Tri-Valley School District 49-6 / 4,690 |
| 79. | 0.2% | Gettysburg School District 53-1 / 1,412 |
| 84. | 0.2% | Eureka School District 44-1 / 1,543 |
| 84. | 0.2% | Parker School District 60-4 / 2,062 |
| 86. | 0.2% | Belle Fourche School District 09-1 / 7,490 |
| 86. | 0.2% | Sisseton School District 54-2 / 7,692 |
| 88. | 0.2% | Beresford School District 61-2 / 3,392 |
| 88. | 0.2% | Edmunds Central School District 22-5 / 1,150 |
| 90. | 0.2% | Hot Springs School District 23-2 / 5,683 |
| 90. | 0.2% | New Underwood School District 51-3 / 1,453 |
| 92. | 0.2% | Baltic School District 49-1 / 1,884 |
| 92. | 0.2% | Newell School District 09-2 / 2,537 |
| 94. | 0.2% | McLaughlin School District 15-2 / 2,541 |
| 94. | 0.2% | Agar-Blunt-Onida School District 58-3 / 2,079 |
| 94. | 0.2% | Lemmon School District 52-4 / 2,020 |
| 97. | 0.2% | Webster School District 18-4 / 2,744 |
| 97. | 0.2% | Irene-Wakonda School District 13-3 / 2,353 |
| 99. | 0.1% | Highmore-Harrold School District 34-2 / 1,950 |
| 99. | 0.1% | Wagner School District 11-4 / 3,891 |
| 101. | 0.1% | Lake Preston School District 38-3 / 1,165 |
| 102. | 0.1% | Milbank School District 25-4 / 5,391 |
| 103. | 0.1% | Deubrook School District 05-6 / 1,925 |
| 104. | 0.1% | Alcester-Hudson School District 61-1 / 2,242 |
Please note that we only rank locations with 'Welsh as First Ancestry Population Percentage' data. The rank above might not be a complete list. Locations without 'Welsh as First Ancestry Population Percentage' data are not listed.
*ACS stands for U.S. Census American Community Survey. According to the U.S. Census, if the date is a range, you can interpret the data as an average of the period of time.
